Rolling mill



March 27, 1928. 1,664,141

J. H. VAN CAMPEN ROLLING MILL Filed April 16, 1926 3 Sheets-Sheet 1 March 27, 1928. 1,664,141

J. H. VAN cAMPEN ROLLING MILL Filed April 16. 1926 3 sheets-sheet 2 f llg. Z.

March 27, 1928.

' 1,664,141 J. H. VAN CAMPEN ROLLING MILL Filed April 16, 1926 3 Sheets-Sheet 3 E /12 T" /,4;, Jam;

JONAH HOWELL VAN CAMPER, F GANTON, OHIO, ASBEGNOB 1'0 TEE TIMBER ROLL BEARING COMPANY, OF CANTON, OHIO, A CORPORATION 0B OHIO.

momma MILL.

Application filed April is, 1920. man No.102,440.

My invention relates to rolling mills, particularly mills of the kind known as threehigh mills. The principal object of the invention is to provide for the use of roller bearings for the rolls thereof. The inven:

tion consists principally in adapting the' housings for the roller bearings so that the same can be accommodated in vertical alinement in the limits of space lmposed by the other practical requirements of the mill. It

also consists in the combinations and arrangements of parts hereinafter described and claimed.

In the accompanying drawing, wherein 16 like reference numerals refer to like parts wherever they occur,

Fig. 1 is an end elevation of a three-high mill embodying my invention;

Fig. 2 is a side view of such mill with a part shown in section and with a part of one end frame broken away to show the devices that secure the top housing;

Fig. 3 is a detailed view illustrating the mounting of the rolls, being partly an end 2 elevation and partly a vertical section; and

3 high stresses that tend to spread them apart;

and this circumstance necessitates that the necks of the rolls and the bearings therefor and their housings shall be large and strong enough to take care of the stresses thereon.

85 Accordingly, any increase in the diameter of the necks of the rolls would reduce by that much the space available for the housings and bearings of the rolls; and likewise, any increase in the space allotted to the housings and bearings could be gained only by decreasing the diameter of the necks of the rolls. To obviate this difliculty, it has been proposed to offset the bearings of the middle roll longitudinally with relation to 4 the bearings of the top and bottom rolls;

but this arrangement sacrifices the great advantages of vertical alinement and has the great disadvantage of increasing the span or distance between the hearing at one end of a roll and the hearing at the other end thereof. For these reasons, it has heretofore been considered impracticable to equip such rolls with roller bearings even in the case of new mills; whereas my invention provides not only for the use of roller hearings in new also.

mills but for their application to old mills The present mill comprises a framework 1 and rolls 2 of common type; but instead of the usual journal bearings and their housings, the necks 3 of the rolls are provlded with roller bearings A whose cu s 4 are contained in housings removably an adustably mounted in the said frames 1 and speclally designed to permit of their vertical tf hnement within the space available there- In order to keep .the overall diameter of the bear1n s A within the limits practically avallable t erefor and still enable such bearings to stand the radial and endwise stresses to which it will be'subject, taper rollers 5 are used and arranged in a multiplicity of circular series. In the construction illustrated, there are feur circular series of taper rollers 5 on each neck 3 of each roll 2. Thefour series of rollers are arran ed in two groups of two series each; an the inner bearing member 6 of each group is made in the form of a ring with an annular thrust rib 7 at the middle of its outer surface. From this thrust rib 7, said inner bearing member 6 tapers toward its ends, which are also preferably provided with thrust ribs 8. Cages 9 are preferably used for spacing the rollers 5 apart; and each series of rollers has its own cup 4 suitably provided therefor in the housing. The endmost cups 4 bear respectively against a shoulderv 10 provided therefor in the housing 5 andagainst a rib 4 provided therefor on a collar 12 that is bolted to the housing B with suitable washers 13 or adjusting shims interposed between said collar 12 and said cup 4. By thus using a multiplicity of series of rollers 5, the stresses thereon are distributed and it becomes practicable to use rollers of smaller diameter than would otherwise be practicable, and thus the overall diameter of the bearing is kept within available limits. Preferably spacer rings 14 are inter-' posed between the middle cups 4 and on the neck 3 of each roll 2 is preferably mounted a ring 15 that constitutes an abutment for the adjacent inner bearing member 6.

As stated above, the passing of the billet between the rolls 2 occasions great stresses u on such rolls, which must be taken care 0 by the necks of the rolls and their bearings A and the housings B therefor; but it is noted that the great stresses on the top roll 2 are upwardly and the great stresses on the bottom roll 2. are downwardly the downward stresses on the top roll and the u ward stresses on the bottom roll bemg re atively unim ortant. Taking-advantage of these facts, t e lower part of the housin 16 of the top roll 2 and the ulpper part 0 the housing 17 of the lower r0 conslstentl with the reduced stresses thereon, are reuced in vertical thickness relativelg to the diametrically opposite portions. thus reducing the portlons of the top and ttom housings adjacent to the housing 18 of the middle roll, the three housings can be placed in vertical alinement in the end frames of, the mill without having to reduce the diameters of the necks 3 of the rolls 2 and with ample space for the roller bearings A therein and adequate provision for the usual clearance re uired for the adjustment of the rolls.

reason of the vertical compactness of the earings and the relative thinness of the portion of the housings of the top and bottom rolls adjacent to the middle roll, it becomes feasible to apply roller bearings to old mills without having to alter either they framework thereof or the rolls thereof, simply by replacing the old journals and their housings with roller bearings and housings designed after the manner hereinbefore described.

What I claim is:

1. A three-high rolling mill comprising end frames, vertically alined roll housings in said end frames, and roller bearings comprisin inner and outer raceway members and r0 lers therebetween interposed between and the u the necks of the rolls and said housings, the portions of the to and bottom housings adacent to the mid le roll being thinner than the portionsthereof awa from said roll to enable said housings to e mounted in vertical alinement.

2. A rolling mill comprising end frames, vertically alincd roll housings in said end frames and roller bearings comprising inner and outer raceway members and rollers therebetween interposed between the necks of the rolls and said housings, the aggregate thickness of the ad'acent portions of said housin s being less t an the aggregate thickness of the diametrically opposite portions.

3. A three-high rolling mill comprising end frames, vertically allned roll housin s in said frames, rolls havin their en s mounted in said housings, an roller bearings interposed between the necks of the ro ls and said housings, the upper and lower housings bein of reduced thickness adjacent to the middle housing to rmit said housings to be mounted in vertica alinement.

4. A three-high rollin mill comprising end frames, vertically almed roll housings in said frames, rolls havin their ends mounted in said housin s, an roller bearings-interposed between t e necks of the rolls and said housings, each bearing comprising a multiplicity of series of conical rollers, er and lower housings being of reduced t ickness adjacent to the middle housing. i

Signed at Canton, Ohio, this 10th day of Aprl 1926. 1

J ONAH HOWELL VAN CAMPEN. 

